how to find all static '/ip firewall mangle' rules

The following allows me to print all static rules:

/ip firewall mangle print static
Flags: X - disabled, I - invalid, D - dynamic 
 ...

However, the same does not work for find:

/ip firewall mangle find static
{{no output}}

How can I find static rules?

if you print, you print,
if you find, you not print
you must print (or put) if you want see something…

if is static, is not dynamic

:put [/ip firewall mangle find where !dynamic]
# equivalent to
:put [/ip firewall mangle find where dynamic=no]

and you obtain only IDs because find is for scripting (do not use :put on scripting for obtain find results…), not for print/put on terminal…